Shimano GRX Di2 ST-R815 STI Shift Lever

With the ST-R815 Disc shift-brake lever, Shimano introduces a gravel/cyclocross shift-brake lever for hydraulic disc brakes and the electronic Di2 shifting systems, marking a further milestone in the development of hydraulic disc brake systems for gravel use. The GRX Di2 STI levers offer optimum ergonomics thanks to their adjustable grip width. Thanks to electronic transmission of shift commands, these are executed without delay. Operation is similar to that of mechanical STI levers, with shifting at the touch of a button. The new 11-speed shifters are also equipped with the programmable Multishift function. Shimano’s engineers have succeeded in integrating a mineral oil cylinder, including a complete braking system, into the still very compact mechanical shift-brake levers. The Dual Control shift/brake levers can be optimally adjusted to the rider via a grip width adjustment and are also very well suited for riders with small hands. Shifting can be performed much faster with the new shift levers. This is achieved through a 20 per cent shorter cable pull. The grips feature an anti-slip coating for greater control on constantly changing terrain.

To operate the GRX Di2 shift levers, the EW-SD50 cable and SM-EW90 Junction Port for Shimano’s Di2 system, complete with a Quick Mount battery holder and mounting hardware, are also required. The EW-SD50 cable set features connectors for the rear derailleur, front derailleur and battery pack. Additionally, the SM-EW90 cockpit junction port is required for connecting the Di2 STI shifters.

To use the wireless function, the new BT-DN110 battery and the EW-WU111 Bluetooth module are also required.

Shimano GRX Di2 shift-brake lever ST-RX815 Technical specifications:

• For 11x2-speed drivetrains
• Adjustable grip width
• Compatible with 11-speed GRX, Dura-Ace and Ultegra Di2 rear derailleurs
• Equipped with programmable multi-shift function
• Weight: 370 g
• Required cable sets: EW-SD50, SM-EW90A E Tube Port
• Required cable connector: Y8RD98010
• Required disc hose: SM-BH90-JK-SSR
• Compatible with all Shimano road disc brake calipers

Herstellerinformation: SHIMANO INC., 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan, www.shimano.com | EU contact: Shimano Europe BV, High Tech Campus 92, 5656 AG Eindhoven, The Netherlands, www.shimano.com